Directions

Preheat oven to 425. Heat oil in a large skillet over medium heat. Add mushrooms and onion; saute until softened, about 5 minutes. Stir in broth mixture and peas. Whisk remaining 1/3 cup water into the flour until smooth; whisk into vegetable mixture. Increase heat to medium-high; bring to a boil.

Spread out piecrust on floured surface. Measure and roll, if necessary, to fit 1 inch larger than top of a 2 quart shallow baking dish. Stir chicken into vegetable mixture and transfer to the baking dish. Place crust over filling; trim and flute edge. Cut a scalloped round from center with a cookie cutter.